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Free online STL splitter for 3D printing

Model bigger than your printer? GigaPrint scales any STL, OBJ or 3MF to the size you want and cuts it into blocks that fit your bed, with joints so the pieces line up when you glue or clip them together. It runs in your browser: nothing to install and your file never leaves your computer.

Split a modelCheck and repair an STL first

How it works

  1. Open your model (STL, OBJ or 3MF), or try a sample.
  2. Set the finished size in millimetres or as a scale.
  3. Pick your printer from 50+ build volumes (Bambu, Prusa, Creality, Elegoo and more) or type the bed size and a safety margin.
  4. Choose the cuts: fewest parts automatically, set counts, or custom cut positions, placed for even spacing or smaller seams.
  5. Add joints: pegs, dowel pins, snap clips, dovetail slides, magnet pockets or flat.
  6. Hollow and finish (optional): wall thickness, a solid band at the cuts, and vent holes.
  7. Download the parts as STL files or 3MF build plates, with a filament and time estimate.

Pricing

Free, no account: splits up to 4 pieces with pegs or flat joints, lithophanes and reliefs up to 100 mm, repairs up to 200k triangles, one laser sheet, unlimited cookie cutters and tags. Pro (coming soon): $7.99/month, $39/year or $79 lifetime, everything unlocked. Commercial (coming soon): $69/year or $149 lifetime, for print shops, farms and studios.

Questions

How do I split an STL for 3D printing?

Open the Giant print tool, load the STL, type the finished size, pick your printer (or enter the bed size), and GigaPrint cuts the model into pieces that fit, with joints so they line up. Download the parts as STL files or 3MF build plates.

Which joints can I add between pieces?

Pegs, dowel pins (holes on both sides for separate pins), snap clips, dovetail slides, magnet pockets, or flat faces for glue. You can set the diameter, length, number per face and fit clearance, and print a small fit test first.

Is the STL splitter free?

Splits up to 4 pieces with pegs or flat joints are free with no account. More pieces, other joint types and hollowing are Pro features.

Is my model uploaded?

No. The split runs in your browser on your own device.